Planetary hours
in Le Mans.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Thursday, 25 December 2025: day of Jupiter
- Sunrise
- 08:47
- Sunset
- 17:10
- Next sunrise
- 08:48
A day hour lasts 42 min; a night hour, 1h 18m. Local time (Europe/Paris).
Day
- 1♃︎ Jupiter08:47 – 09:29
- 2♂︎ Mars09:29 – 10:11
- 3☉︎ Sun10:11 – 10:53
- 4♀︎ Venus10:53 – 11:35
- 5☿︎ Mercury11:35 – 12:17
- 6☽︎ Moon12:17 – 12:59
- 7♄︎ Saturn12:59 – 13:41
- 8♃︎ Jupiter13:41 – 14:23
- 9♂︎ Mars14:23 – 15:05
- 10☉︎ Sun15:05 – 15:47
- 11♀︎ Venus15:47 – 16:28
- 12☿︎ Mercury16:28 – 17:10
Night
- 1☽︎ Moon17:10 – 18:28
- 2♄︎ Saturn18:28 – 19:47
- 3♃︎ Jupiter19:47 – 21:05
- 4♂︎ Mars21:05 – 22:23
- 5☉︎ Sun22:23 – 23:41
- 6♀︎ Venus23:41 – 00:59
- 7☿︎ Mercury00:59 – 02:17
- 8☽︎ Moon02:17 – 03:35
- 9♄︎ Saturn03:35 – 04:53
- 10♃︎ Jupiter04:53 – 06:12
- 11♂︎ Mars06:12 – 07:30
- 12☉︎ Sun07:30 – 08:48
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Questions
How are the planetary hours calculated in Le Mans?
On Thursday, 25 December 2025, the Sun rises at 08:47 and sets at 17:10: the day lasts 8h 23m, that is twelve day hours of 42 min. The night, until the next sunrise at 08:48, lasts 15h 37m: twelve night hours of 1h 18m.
Which planet rules the first hour that day?
Jupiter, from 08:47 to 09:29: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Mars, the Sun, Venus, Mercury, the Moon, Saturn, then Jupiter again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.